package com.djz.stuinfomge.dao.impl;

import java.util.List;

import org.hibernate.LockMode;
import org.hibernate.Query;
import org.hibernate.criterion.Example;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.stereotype.Repository;

import com.djz.stuinfomge.dao.ISpecialityDAO;
import com.djz.stuinfomge.entity.PageBean;
import com.djz.stuinfomge.entity.Speciality;
import com.djz.stuinfomge.exception.PageNumOutOfRange;
import com.djz.stuinfomge.util.Finder;

/**
 * A data access object (DAO) providing persistence and search support for
 * Speciality entities. Transaction control of the save(), update() and delete()
 * operations can directly support Spring container-managed transactions or they
 * can be augmented to handle user-managed Spring transactions. Each of these
 * methods provides additional information for how to configure it for the
 * desired type of transaction control.
 * 
 * @see com.djz.stuinfomge.entity.Speciality
 * @author MyEclipse Persistence Tools
 */
@Repository
public class SpecialityDAO extends BaseDaoImpl<Speciality> implements ISpecialityDAO {
	private static final Logger log = LoggerFactory
			.getLogger(SpecialityDAO.class);
	// property constants
	public static final String NAME = "name";
	public static final String PARENT_ID = "parentId";

	public void save(Speciality transientInstance) {
		log.debug("saving Speciality instance");
		try {
			getSession().save(transientInstance);
			log.debug("save successful");
		} catch (RuntimeException re) {
			log.error("save failed", re);
			throw re;
		}
	}

	public void delete(Speciality persistentInstance) {
		log.debug("deleting Speciality instance");
		try {
			getSession().delete(persistentInstance);
			log.debug("delete successful");
		} catch (RuntimeException re) {
			log.error("delete failed", re);
			throw re;
		}
	}

	public Speciality findById(java.lang.Integer id) {
		log.debug("getting Speciality instance with id: " + id);
		try {
			Speciality instance = (Speciality) getSession().get(
					"com.djz.stuinfomge.entity.Speciality", id);
			return instance;
		} catch (RuntimeException re) {
			log.error("get failed", re);
			throw re;
		}
	}

	public List findByExample(Speciality instance) {
		log.debug("finding Speciality instance by example");
		try {
			List results = getSession().createCriteria(
					"com.djz.stuinfomge.entity.Speciality").add(
					Example.create(instance)).list();
			log.debug("find by example successful, result size: "
					+ results.size());
			return results;
		} catch (RuntimeException re) {
			log.error("find by example failed", re);
			throw re;
		}
	}

	public List findByProperty(String propertyName, Object value) {
		log.debug("finding Speciality instance with property: " + propertyName
				+ ", value: " + value);
		try {
			String queryString = "from Speciality as model where model."
					+ propertyName + "= ?";
			Query queryObject = getSession().createQuery(queryString);
			queryObject.setParameter(0, value);
			return queryObject.list();
		} catch (RuntimeException re) {
			log.error("find by property name failed", re);
			throw re;
		}
	}

	public List findByName(Object name) {
		return findByProperty(NAME, name);
	}

	public List findByParentId(Object parentId) {
		return findByProperty(PARENT_ID, parentId);
	}

	public List findAll() {
		log.debug("finding all Speciality instances");
		try {
			String queryString = "from Speciality";
			Query queryObject = getSession().createQuery(queryString);
			return queryObject.list();
		} catch (RuntimeException re) {
			log.error("find all failed", re);
			throw re;
		}
	}

	public Speciality merge(Speciality detachedInstance) {
		log.debug("merging Speciality instance");
		try {
			Speciality result = (Speciality) getSession().merge(
					detachedInstance);
			log.debug("merge successful");
			return result;
		} catch (RuntimeException re) {
			log.error("merge failed", re);
			throw re;
		}
	}

	public void attachDirty(Speciality instance) {
		log.debug("attaching dirty Speciality instance");
		try {
			getSession().saveOrUpdate(instance);
			log.debug("attach successful");
		} catch (RuntimeException re) {
			log.error("attach failed", re);
			throw re;
		}
	}

	public void attachClean(Speciality instance) {
		log.debug("attaching clean Speciality instance");
		try {
			getSession().lock(instance, LockMode.NONE);
			log.debug("attach successful");
		} catch (RuntimeException re) {
			log.error("attach failed", re);
			throw re;
		}
	}



	public PageBean<Speciality> getPage(Integer pageNo, Integer size,
			Speciality bean) throws PageNumOutOfRange {
		// 根据条件构造JPA-QL
		Finder finder = Finder.create("from Speciality");


		finder.append("where 1=1");
		finder.append("and id !=0");
		if (bean != null && bean.getName() != null) {

			finder.append("and name like :name").setParam("name",
					"%" + bean.getName() + "%");
		}
		
		finder.append("order by id desc");
		log.debug("finder: "+ finder +" pageNo: "+ pageNo + " size: "+ size);
		PageBean<Speciality> page = find(finder, pageNo, size);
		return page;
	
	}

	public List<Speciality> topLevelCategory() {
	
		return getHibernateTemplate().find("from Speciality where id =0 or parent.id = 0");
	}


}
